Institute of Economic & Social Development, Dongbei University of Finance and Economics, Dalian, 116025, China.
School of Statistics, Dongbei University of Finance and Economics, Dalian, 116025, China.
Environ Sci Pollut Res Int. 2021 Apr;28(15):19202-19221. doi: 10.1007/s11356-020-11983-7. Epub 2021 Jan 4.
Given the context of the global energy shortage and the deterioration of the ecological environment, this paper uses industrial linkage as a starting point to deeply explore the energy consumption of different sectors and its transfer characteristics. First, a dual evaluation of energy consumption in various sectors is conducted from the perspectives of production and demand to realize an integrated analysis from the energy consumption perspective. Second, based on industrial linkage, the economic input-output life cycle assessment (EIO-LCA) model is used to quantify the net transfer of energy consumption and identify the transfer of energy consumption pressure embodied in economic activities by various sectors. Finally, the energy consumption of various sectors is decomposed, and the transfer flow of energy consumption is measured to accurately quantify the degree of linkage in the energy consumption of sectors. The results show that the current direct energy consumption intensity of various sectors in China is continuously decreasing, but this decrease is insufficient to reverse the upward trend in energy consumption demand. From the perspective of production and demand, non-energy industrial sector is a key sector for reducing energy consumption, and the intersectoral linkage between the subsectors caused by product trade flows has a greater impact on the level of direct and embodied energy consumption. Direct and embodied energy consumption in the same sector can be ranked quite differently, and their levels may not be equal. Energy sector is the main net outflow sector of energy consumption, and the level of its direct energy consumption is much higher than that of its embodied energy consumption. It is worth noting that the scale of embodied energy consumption in construction industry is much higher than the scale of direct energy consumption. Construction is the sector with the greatest net inflow of energy consumed and is the main driver of the energy consumption transfer of energy sector and non-energy industrial sector.
鉴于全球能源短缺和生态环境恶化的背景，本文以产业关联为切入点，深入探讨了各部门的能源消耗及其传递特征。首先，从生产和需求两个方面对各部门的能源消耗进行双重评价，实现从能源消耗角度的综合分析。其次，基于产业关联，采用经济投入产出生命周期评价（EIO-LCA）模型量化能源消耗的净转移，并识别各部门经济活动所蕴含的能源消耗压力转移。最后，对各部门的能源消耗进行分解，测度能源消耗的传递流，准确量化部门间能源消耗的关联程度。结果表明，当前中国各部门的直接能源消耗强度持续下降，但这不足以扭转能源消耗需求的上升趋势。从生产和需求的角度来看，非能源工业部门是降低能源消耗的关键部门，产品贸易流引起的部门间关联对直接和隐含能源消耗水平有更大的影响。同一部门的直接和隐含能源消耗可能排名相差很大，其水平可能并不相等。能源部门是能源消耗的主要净流出部门，其直接能源消耗水平远高于隐含能源消耗水平。值得注意的是，建筑业隐含能源消耗的规模远高于直接能源消耗的规模。建筑是能源消耗净流入最大的部门，也是能源部门和非能源工业部门能源消耗转移的主要驱动力。
